Is Water dispenser safe to make formula milk for newborn

Hi all. FTM here. Would like to ask if those filtered water from water dispenser (for eg living care, hydroflux) is safe enough to make formula milk for newborn? Usually their hot water selection comes with different temperature so husband thought we could straight away use like a warmer temperature (for clearer context, say at 50 degrees and not boiled to 100) to make formula milk. But I am just wondering if the “safest” way should be using only boiled water then cool it down to desired temp? Anybody has real life experience of using the hot water straight from water dispenser and babies turn out fine? 😅